In reply to mrkrndvs.

@mrkrndvs I considered doing that, but when searching the archive it makes it harder to separate the likes from the dislikes. Incidentally I noticed that your like feed has content, but appears to be empty: collect.readwriterespond.com/kind/like...

I've seen something like this before and there's a possibility that somehow in your wp_postmeta database the meta_key field for them got changed from the standard "mf2_like-of". Either this or you've manually changed the code in Post Kinds to something else and now your install isn't finding the data as a result.

If it's something worse, let @dshanske know.